HYDROCIATTMLW Water chillers Heat pump Electrical data notes ■ Standard and high efficiency units Notes, electrical data and operating conditions HYDROCIATTMLW 1. The operating environment for theHYDROCIATTMLW units is specified below: • As standard: • Environment(2): Environment as classified in EN 60721 (corresponds LW 708 to 2328 units have a single power connection point located to IEC 60721): immediately upstream of the main disconnect switch. - indoor installation HYDROCIATTMLW 2800 to 4628 units have two connection points - ambient temperature range: minimum temperature +5°C to +42°C, located immediately upstream of the main disconnect switches. class AA4 • The control box includes the following standard features: - altitude: lower than or equal to 2000 m - one main disconnect switch per circuit(1), - presence of water: class AD2 (possibility of water droplets) - Starter and motor protection devices for each compressor - presence of hard solids, class 4S2 (no significant dust present) - anti-short cycle protection devices(1), - presence of corrosive and polluting substances, class 4C2 - Control devices (negligible) • Field connections: 2. Power supply frequency variation: ± 2 Hz. All connections to the system and the electrical installations must be 3. The neutral (N) line must not be connected directly to the unit (if in full accordance with all applicable codes. necessary use a transformer). • The CIAT LW units are designed and built to ensure conformance with 4.Overcurrent protection of the power supply conductors is not provided local codes. The recommendations of European standard EN 60204-1 with the unit. (corresponds to IEC 60204-1) (machine safety - electrical machine 5. The factory installed disconnect switch(es)/circuit breaker(s) is (are) of components - part 1: general regulations) are specifically taken into a type suitable for power interruption in accordance with EN 60947-3 account, when designing the electrical equipment. (corresponds to IEC 60947-3). • The absence of power supply disconnect switch(es) and short-cycle 6. The units are designed for connection to TN networks (IEC 60364). protection devices in option : Non disconnect switch, but short For IT networks the earth connection must not be at the network circuit protection, is an important factor that has to be taken into earth. Provide a local earth, consult competent local organisations to consideration at the installation site. complete the electrical installation. Units equipped with one of these two options are supplied with a declaration of incorporation, as required by the machinery directive. NOTE: If particular aspects of an actual installation do not conform to Notes: the conditions described above, or if there are other conditions which • Generally the recommendations of IEC 60364 are accepted as should be considered, always contact your local CIAT representative. compliance with the requirements of the installation directives. Conformance with EN 60204-1 is the best means of ensuring (1)Not provided for units equipped with no disconnect switch but short compliance with the Machines Directive. circuit protection option. • Annex B of EN 60204 1 describes the electrical characteristics (2)The required protection level for this class is IP21B or 1PX1B used for the operation of the machines. (accordingto reference document IEC 60529). All HYDROCIATTMLW units fulfil this protection condition. In general the casings fulfil class IP23 or IPX3B. CATALOGUE 2021 555 555